:root {
    --primary-bg: #0a0a0f;
    --secondary-bg: #141419;
    --card-bg: #1a1a24;
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --gold: #f59e0b;
    --red: #ef4444;
    --green: #22c55e;
    --blue: #3b82f6;
    --baron-purple: #9333ea;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ═══════════════════════════════════════════
   LOADER
   ═══════════════════════════════════════════ */

.loader-screen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--primary-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    transition: opacity 0.5s ease;
}

.loader-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-title {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ═══════════════════════════════════════════
   LOBBY / MAIN MENU
   ═══════════════════════════════════════════ */

.lobby {
    position: fixed;
    inset: 0;
    z-index: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    background: linear-gradient(180deg, rgba(10, 10, 15, 0.85), rgba(10, 10, 15, 0.95)),
                url('assets/images/summoners-rift.jpg') center/cover no-repeat;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.lobby.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.lobby-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--baron-purple), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    letter-spacing: -0.02em;
}

.lobby-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: -0.5rem;
}

.lobby-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: min(320px, 90vw);
}

.lobby-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    text-decoration: none;
}

.lobby-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
}

.lobby-btn.primary {
    background: var(--accent-gradient);
    border-color: transparent;
}

.lobby-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

/* ═══════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════ */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.back-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.header-title {
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--baron-purple), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.header-stat-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header-stat-value {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gold);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sound-toggle, .help-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sound-toggle:hover, .help-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.sound-toggle.off {
    color: var(--red);
}

/* ═══════════════════════════════════════════
   MAIN GAME LAYOUT
   ═══════════════════════════════════════════ */

.game-container {
    display: none;
    flex-direction: column;
    min-height: 100vh;
}

.game-container.active {
    display: flex;
}

.game-main {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ═══════════════════════════════════════════
   RP SECTION (CLICKER)
   ═══════════════════════════════════════════ */

.rp-section {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.rp-display {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--gold);
    margin-bottom: var(--spacing-xs);
}

.rp-display .rp-icon {
    width: 28px;
    height: 28px;
    vertical-align: middle;
    margin-left: 4px;
}

.rp-per-sec {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.rp-per-sec span {
    color: var(--green);
    font-weight: 600;
}

.click-btn {
    position: relative;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    -webkit-user-select: none;
}

.click-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

.click-btn:active {
    transform: scale(0.95);
}

/* ═══════════════════════════════════════════
   CHAMPION SECTIONS
   ═══════════════════════════════════════════ */

.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.champions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.champion-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.champion-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.champion-card:hover::before {
    opacity: 0.03;
}

.champion-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.champion-card.locked {
    display: none;
}

.champion-card.locked.visible {
    display: block;
}

.champion-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.champion-count {
    color: var(--accent-primary);
    font-weight: 700;
}

.champion-img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin: var(--spacing-sm) 0;
    position: relative;
    z-index: 1;
}

.champion-stats {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: var(--spacing-sm) 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.champion-stats .stat-damage {
    color: var(--red);
    font-weight: 600;
}

.champion-stats .stat-production {
    color: var(--green);
    font-weight: 600;
}

.champion-stats .stat-cost {
    color: var(--gold);
    font-weight: 600;
}

.champion-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.champion-buy-row {
    display: flex;
    gap: var(--spacing-xs);
}

.btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
}

.btn.upgrade {
    background: rgba(147, 51, 234, 0.15);
    border-color: rgba(147, 51, 234, 0.3);
    color: #c084fc;
}

.btn.upgrade:hover {
    background: rgba(147, 51, 234, 0.25);
    border-color: var(--baron-purple);
}

.btn.upgrade.hidden {
    display: none;
}

/* ═══════════════════════════════════════════
   BARON FIGHT SECTION
   ═══════════════════════════════════════════ */

.baron-section {
    background: linear-gradient(180deg, var(--secondary-bg), var(--primary-bg));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.baron-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('assets/images/summoners-rift.jpg') center/cover no-repeat;
    opacity: 0.08;
}

.baron-header {
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-lg);
}

.baron-health-label {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--baron-purple);
    margin-bottom: var(--spacing-sm);
}

.baron-health-bar {
    width: 100%;
    max-width: 600px;
    height: 24px;
    margin: 0 auto var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.baron-health-bar progress {
    width: 100%;
    height: 100%;
    appearance: none;
    -webkit-appearance: none;
}

.baron-health-bar progress::-webkit-progress-bar {
    background: transparent;
}

.baron-health-bar progress::-webkit-progress-value {
    background: linear-gradient(90deg, var(--red), var(--baron-purple));
    border-radius: 12px;
    transition: width 0.5s ease;
}

.baron-health-bar progress::-moz-progress-bar {
    background: linear-gradient(90deg, var(--red), var(--baron-purple));
    border-radius: 12px;
}

.baron-health-text {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.baron-health-text span {
    color: var(--red);
    font-weight: 700;
}

.baron-image {
    position: relative;
    z-index: 1;
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    margin: var(--spacing-md) 0;
}

.attack-btn {
    position: relative;
    z-index: 1;
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--red), var(--baron-purple));
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.attack-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(147, 51, 234, 0.4);
}

.attack-btn:active {
    transform: scale(0.95);
}

/* ═══════════════════════════════════════════
   ARMY DISPLAY
   ═══════════════════════════════════════════ */

.army-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.army-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.army-title span {
    color: var(--accent-primary);
    font-weight: 700;
}

.army-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.army-grid img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    opacity: 0.8;
}

/* ═══════════════════════════════════════════
   ITEM SHOP
   ═══════════════════════════════════════════ */

.shop-toggle {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 200;
    writing-mode: vertical-rl;
    padding: var(--spacing-md) var(--spacing-sm);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--baron-purple);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    letter-spacing: 0.1em;
}

.shop-toggle:hover {
    padding-left: var(--spacing-md);
    background: var(--secondary-bg);
    border-color: var(--baron-purple);
}

.shop-panel {
    position: fixed;
    left: -280px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 199;
    width: 260px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    padding: var(--spacing-lg);
    transition: left var(--transition-base);
}

.shop-panel.open {
    left: 0;
}

.shop-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--baron-purple);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.shop-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: rgba(255, 255, 255, 0.02);
}

.shop-item:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.shop-item.purchased {
    opacity: 0.4;
    pointer-events: none;
    border-color: var(--green);
}

.shop-item.locked-item {
    opacity: 0.3;
    pointer-events: none;
}

.shop-item img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.shop-item-info {
    flex: 1;
}

.shop-item-name {
    font-size: 0.85rem;
    font-weight: 600;
}

.shop-item-cost {
    font-size: 0.75rem;
    color: var(--gold);
}

/* ═══════════════════════════════════════════
   MODALS
   ═══════════════════════════════════════════ */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 900;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 440px;
    width: 100%;
    text-align: center;
}

.modal h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.modal p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.modal-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
}

.modal-btn.buy {
    background: var(--accent-gradient);
    border-color: transparent;
}

.modal-btn.buy:hover {
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

/* ═══════════════════════════════════════════
   TOAST NOTIFICATIONS
   ═══════════════════════════════════════════ */

.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    z-index: 950;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.error {
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: 1px solid rgba(239, 68, 68, 0.5);
}

.toast.success {
    background: rgba(34, 197, 94, 0.9);
    color: white;
    border: 1px solid rgba(34, 197, 94, 0.5);
}

.toast.info {
    background: rgba(99, 102, 241, 0.9);
    color: white;
    border: 1px solid rgba(99, 102, 241, 0.5);
}

/* ═══════════════════════════════════════════
   BARON ATTACK ANIMATION OVERLAY
   ═══════════════════════════════════════════ */

.baron-attack-overlay {
    position: fixed;
    inset: 0;
    z-index: 800;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
}

.baron-attack-overlay.active {
    display: flex;
}

.baron-attack-overlay img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* ═══════════════════════════════════════════
   WIN SCREEN
   ═══════════════════════════════════════════ */

.win-overlay {
    position: fixed;
    inset: 0;
    z-index: 900;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.95);
}

.win-overlay.active {
    display: flex;
}

.win-overlay img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* ═══════════════════════════════════════════
   HELP OVERLAY
   ═══════════════════════════════════════════ */

.help-overlay {
    position: fixed;
    inset: 0;
    z-index: 950;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.9);
    padding: var(--spacing-lg);
    cursor: pointer;
}

.help-overlay.active {
    display: flex;
}

.help-overlay img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.help-close-hint {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ═══════════════════════════════════════════
   FLOATING RP ANIMATION
   ═══════════════════════════════════════════ */

.float-rp {
    position: fixed;
    z-index: 300;
    pointer-events: none;
    font-weight: 700;
    color: var(--gold);
    font-size: 1.2rem;
    animation: floatUp 0.8s ease-out forwards;
}

@keyframes floatUp {
    0% { opacity: 1; transform: translateY(0) scale(1); }
    100% { opacity: 0; transform: translateY(-60px) scale(0.5); }
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */

@media (max-width: 1024px) {
    .champions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .header-right {
        gap: var(--spacing-sm);
    }

    .header-stat {
        min-width: 0;
    }

    .game-main {
        padding: var(--spacing-md);
    }

    .champions-grid {
        grid-template-columns: 1fr;
    }

    .champion-img {
        width: 80px;
        height: 80px;
    }

    .rp-section {
        padding: var(--spacing-md) 0;
    }

    .baron-image {
        max-height: 250px;
    }

    .shop-toggle {
        display: none;
    }

    .shop-panel {
        position: static;
        transform: none;
        width: 100%;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        margin-bottom: var(--spacing-xl);
    }

    .shop-panel.open {
        left: auto;
    }

    .army-grid img {
        width: 30px;
        height: 30px;
    }
}

@media (max-width: 480px) {
    .lobby-title {
        font-size: 2rem;
    }

    .header-title {
        font-size: 0.95rem;
    }

    .rp-display {
        font-size: 1.5rem;
    }
}

/* Disable animations on mobile for performance */
@media (max-width: 768px) {
    .champion-card:hover {
        transform: none;
    }

    .champion-card::before {
        display: none;
    }
}